Automatic switch mechanism.



A. C. GRISGOM. AUTOMATIC SWITCH MEGHANI'SM.

APPLICATION FILED SBPT,26,1907.

953,028. Patented Ma1x29, 1910.

2 SHEETS-SHEET 2.

@LWN/weno@ z tiieettcettcn of Letters lfstcnt.

"ententes es, icio.

ipplcaton man september 36, we?. Serial Sie. 394,619.

. mii whom ii may concern:

lie it known that l, tinnen CwGni'scoM, .'.zen of 'the United States, and resident he cit county2 und State of New York, tieve nui e certain new sind usefull invenin' Automatic Switch Mechanism, ot

iviiicu the ztollowin is e specification.

This invention re etes to automatic switch further object is to rovide :in appas of the character reierre'd to wherein are employed eieetromegnetic ineens for completing a shunt or branch circuit around the switcha :incl ineens whereby the brunch shunt circuit is automatically short circiiited to permit of' quick openingr of the circuit.

il iinitliiobject is to provide :in automotf operating switch ,mechanism which operates to divide tlie'current and to etlect n. quicl opening of the circuit, thereby l lling the damage sind the danger et. its contracts.

r objects ofi the invention Will nppeur more `iully hereinafter.

The invention consists substintially in construction, combination, locution und e arrangement of parts, :ill os will ore fully hercii'uitt'er set forth. shown accompanying; drawing. und finally out in the appended claims. eierring to the uccorinnnyi 'drawing' to the reference n A various views and s appearing; thereon-Figure l, is n,

j vrciv, in elevationx ports in. vertical sectiona showing en automatic switch mechanism Y .einbodvin the rinci )les of m f invention applied to nn air pump. Fig. 2. is n View, somewhat diagrammatic, showing :i inodied arrangement embraced Awithin the spirit end scope of my invention. Figs. 3 end el are elevations of the respective ends ci? the 'switch mechanism.

The same part is designated by the same reference sign wherever it occurs throughout they several views.

ln carrying outthe principle ot my inntioii, i. propose to employ e solenoid eno., in starting up the devicei to include the coils of the solenoid in circuit With the contact to be broken. l also propose to pro-V vide means, operated y the energizationof the solenoid, to establish e branch` oi shunt circuit around the Contact to be broken. and then .to providemeans for short circuiting' the solenoid circuit whereby the main circuit is quickly opened, thereby two-idilio the formation ost destructive arcs. These objects und purposes muy be carried out in it wide variety of ditlerent constructions, und for di'licrent uses, Without departing` from the spirit and scope of my invention.

lin the drawings reference sign 5 designatos n solenoid coil, vhich, in thc particular :torni shown, is 1wound upon u tube (i, and between end plates 7 carried thereby, seid tube being; supported in stands 8, of :t bracket or plate l), the latter being convcn iently mounteclon an insulating,r slub or other Y suitable support l0. One end of thc wire vforming the Winding ot the solenoid'coil is connected electrically es at 1l, with the tube l yicldingly pressed und held outwardly by l Spring; il] or other suitable menus. When the solenoid coil energized, however. then this core is drown into thc coil, thereby causing 'the spring* Contact plates 13, to malte contact with the carbon or other suitable contacts l5, which nrc suitably mounted on the insulatingbase plate 107 und thereby insulated from the from@ Work. ln practice l prefer to employ cylindrical carbon blocks for the contacts l5, but my invention is not to be' limited in this respect as othciI forms of contactinuy be employed, The contacts 157 :1re mounted upon u 'bracket 16. which is nrranged to struddle the pluto i), ns most clearly shown in Fig. 3.

Cooperating'uith one ot' the contucts 15. is a movable contact urm 17. which is urv tinged to be moved buck und forth between' the contact 15, und o fixed insuluted contact 18, which is mounted upon the insulating bose plete 10. i

ln the particular embodiment of my invention shown in Fig. l, l have shown the seine ns applied to the automatic operation @mmm o' an air pump. The uxoor 1S), is urz-ange, Y ci commet with con ineukug o? i'hc pump. A. tubo 24, is cm 'lcd ov the da phrugm in such manner du 1i be movcd longitudinally by Such dapuogzu. To@ movement of said uoc uudcr the uucuce 15 of increased a' pl'cssu in he chamba' 2l,

is yieldiugy opposefi u spring 2,5, ou

ranged Wlthm sind tuba., ih@ tension of sind Screw 26, tapped thm u brach :1 l

20 mounted ou the ingu AmLg "unse p-:ac 5G. Carried by 'the usa 'e, i? un .farm or pro jcctiou 28 m'uugcd to cngage the movabc Contact arm l?, and move the Siu le out of con'act with counct i', und to counc 25 with comme?, 1S, whenever said 'ubc is moved under hc in'uclcc of ucczzscd or criccusivc pre e in. the pxcssiu'c chamber To this end ih@ contact arm 1 7, i3 pvotffiy mounts us ut il?, upo: hc f'auue Amc 9,

30 :and iu postou o bc munged by Vzw uu: or projectou :28, said commet :um 17, being, l

un' heim 157 and of, A. iu hc cominci Tamil 17 1s short c cmcc by' hc brauch m. Shuut i 'the $0 csabhshcd Mound u. By *jle compctmu und tu? a button 30.

seanceo mounting` the saine, thi; carbon contacts, the solenoid core and auxiliary contacts carried thereby and the motor connections therefrom' remain the same, as above described with reference to Fig. 1. The inanner of completing the initial circuit, and the shunt circuit around the solenoid, however, are somewhat different. In this instance l. employ two circuit closers which, iat desired,

-inay be in the form of push buttons, 30, 31,

one controlling a circuit to one of the carbon contacts 15, and the other a shunt circuit around said contact 15. In order to start up the motor the push button 30 is pressed thereby completing circuit lfrom the main supply Wire a, wire b, the coils of solenoid 5, the frame parts 6, 8, and 9, Wire g, Wire z, contacts 15, and on through the motor and return the same as above described with reference to the arrangement and construction disclosed in Fig. 1. This starts the motor and energizes the solenoid. Thereupon the solenoid core 12, is drawn in cause ingthe auxiliary contacts 13, to make contact with the carbon blocks 15, and hence establishing a short circuitA around the push Under these conditions the motor continues to operate until it is desired to arrest the saine, when the push button, or other form of contact at 31 is depressed. Thereupon the circuit 'iscompleted from main supply Wire a, through Wires m, and n,

`Wire g, the frame plate and parts 9, 8, and 6,

.core 12, auxiliary contacts 13, contacts 15, and on through the motor as before. This ,establishes a short circuit around the coils of the solenoid and instantly the core 12, is forced outwardly by its spring and opens the motor circuit by breaking contact ben tween contact 13, and carbon blocks 15, by a quick operating'break.

It is obvious that my invention may also be practically applied in many other Ways and for many other purposes.

Having now set forth the object and nature of my invention and the manner of its operation', and various modes of applicationy thereof,-\'vht I claim as new and useful, and of nijoWn invention, and desire to secure by etters Patent is 1. In a vswitch mechanism, a main motor circuit ,including separable contacts and a solenoid, yineans operated by thev solenoid for short circuiting said separable contacts and means for short circuiting the solenoid to open the niotor circuit.

2. In a switch mechanism, a main motor circuit including separable contacts adapted bo be closed upon each other to complete said circuit, means arranged in said circuitfor establishing a shunt circuit around said contacts and means for opening said shunt ci r cuit to break the motor circuit.

3'. In a switch mechanism, a main motor circuit including separable contacts, electrical devices arranged in said circuit and controlling a shunt circuit around said contacts,'and automatic devices for shunting said electrical devices. Y v

4t. ln a switch mechanism, a main inotor `circuit including separable contacts, a solenoid arranged to he included in said circuit when said contacts are closed upon each other, a shunt circuit around said contacts,

means actuated by the eneigization of said solenoid for closing said' shunt circuit, whereby said contacts may be broken With` out arcing, and means for cutting said solenoid out of circuit to open the shunt circuit. ln a si'itch mechanism, a main motor circuit including separable contacts, a normally open shunt circuit around saidecontacts, a solenoid arranged in said main inotor circuit and operating, when energized, to close said shunt circuit, whereby said main circuit may be opened at said contacts without arciiig, and automatic means for shuntirig said solenoid from main circuit to open said shunt circuit.

izo

6. ln a switch mechanism, a main motor circuit includingseparable contacts adapted to be eiosed upon each other, a shunt circuit around said contacts, ineaneoperated by the closing of said contacts upon each other for closing said shuntcircuit, and means operl a5 ated by the opening of said contacts for opening the shunt circuit. 7. ln a switch mechanism, a main motos' circuit including separable contacts adapted to be closed upon each other, a shunt circuit around said contacts, nieansfoperated by the closing of said contacts upon each other tor closing said shunt circuit and automatic devices ior effecting a quiclr opening of said shunt circuit.

8. ln a switch mechanism, a niain motor circuit including separable contacts adapted to be closed upon cach other, a shunt circuit around said contacts, means operated by the closing of said contacts upon each other for closing said shunt circuit, and automatic moans vcontrolled by the ,opening of saidcontacts for opening said shunt circuit.

t). In a switch mechanism, a main motor circuit including separable contacts adapted to be closed upon each other, a shunt circuit around said contacts, a solenoid arranged in the main motor circuit, meansopcrated by` the said solenoid tor closing' said shunt circuit, and automatic devices operated by the separation ofsaid contacts for shunting' the solenoid to open said shunt circuit.

l0. ln a switch mechanism, a main motor circuit including separable contacts, a shunt circuit aro'und said contacts, a solenoid, a spring pressed cere therefor, contacts car ricd by said coref id adapted to close said shunt circuit Whe *said solenoid is energized, safid solenoid being inclut in the main motor circuit, when said main mo- Acircuit shunt circuit around im' circuit is Completed said sliuut cieui is esi'ablishc and ineens for sliun'eing said sale-unifi ie onen said shunt Circuit. n

fl.. in s. slvicli mechanism, a Inuin mooi eircni including separable contacts s Vshunteizmnd said centueis, s solenoid hsv'- i', eireuit ing' :i coi-e. u spiking? :fer normally pressing said ove miin'nially, eentnels Carried. by suini core nml adapted. le close 'said shunt circuit lien suini solenoid is eneigized to attract seid eure. said solenoid. being arranged in seid main finooi' circuiti, and Ineens for slimming' said solenoid whereby seid sluin', uii'cui; is quickly opened.

12. in :i sn'ieh uieclmnisn'i, n main @unter circuit including separable contacts, n sliun circuit around said efmacts, solenoid hm(- ing :i eo'ie a spring normally operating to ress seid core outwardly, Contacts Carried y seid core sufi1 Operating, when he coi* is attracted by the eneigization of saiidsolen- Giel, se establish said shunt circuit, said solenoid being :arranged in the inuin nieto? circuit, shunt ciifeuii :mound said seleneifl7 said last mentioned shunt circuit being ubiished by *die sepa-mien of separable conn mets.

i3. ln u. switch mechanism, a main motor circuit ineiufling separable eoniaes, a shunt circuit around said eontnes. :i solenoid sind core, a spring iwrnmlly pressing seid eoie ouvwadly, eontees carried by said core und eonifelling seid sleun circuit. said selen eid being included in the main motor ein enit, ineens epeieiefl ny the motor for sepsluiting seid movable Coniaes, and .means eperfn'zed by die separation of .aid contacts for sliunting said solenoid.

l. in a switch mechanism, :i main motor including separable conacis, a eid contacs, means uriangecl in the main inoier eircuiiV for es tulnlisning shunt cireui when said main meter` circuit is ele-sed, means Operated by the meier for sepa/rating said separable conzletis and means operated by the separation of said contacts for opening said slinnt circuit.

l5. The combination of a: motor, a circuit therefor,

a pressure meehenisin coniiolled by the metes, contracts controlling said eirmesns opere mi bre' ,Ji including sf )fumble a pressure mechanism eent'nll .mien 69 means feindgusting sind g mechfi,

ism le a, predetermined A enit aiennd sind e seif spring, e sn'iieli in4 trolling the eiieun si" ssiul niet@ unal. me ns epented by' Une TA- nf een znuei fer eonreiiing seid swiien nischen 18. minimi. L n10 e enit 'tlieie":z, :i niemble e I 'rolling said ein/suit, s. Menen?. :,ux'zan; sziici ciifeni', unf?. miepmfl, in @lese .n siiun'i. eiieuit :i tacit? n. pi nre {ieviee con ei :mii inni .cui the iniluenee 1 t 1n erin esifiieci by saisi member 'l ranged te nieve seid Contact ie open ci position, e shunt circ iL aren" anni :i cominci. eeipeiein" able eenne; when ille ln nieve@ open ei'ieni position. for eiosinml seid nienie simili eiieni'.

in .sinnnnjf nf'lieieoi inve heieun-Lo my hand in ine pesenee of e subscribing wilnes en this 20H1 day e., Sepeznbei when energized,

f Con- ALFRED C. 

